Baker&#39;s oven.



No. 723,664. PATENTED MAR. 24, 1903.

J. M. FISCHER.

BAKERS OVEN.

APPLICATION FILED AUG. 27, 1902.

N0 MODEL.

3 Sum:

Wit 10mm aw/ m Jda/ THE "cams PETERS co.. PHOTOLITHOY. wAsmNc-Yom 0.1:.

N0. 723,664. PATBNTED MARJZ L, 1903..

J. M. FISCHER.

BAKERS- OVEN.

APPLICATION FILED AUG. 2'ir1902.

N0 MODEL. 3 SHEETS-SHEET 2.

naw 1 :62:

Qttowu s 1H: norms PETERS co, morn-urns WASHINOTDN. n c.

No. 723,664. "PATBNTED MAR. 24, 1903. J. M. FISCHER. BAKERS OVEN.

APPLIQATION FILED AUG. 27. 1902. I I0 MODEL. 3 SHEETS-SHEET 3 ma Noams PETERS 0o. mo1ou'rno.,wAsumuwm u. c.

U ITED STATES PATENT OFFICE.

JOHN FISCHER, OENV-ASHINGTON, DISTRICT OF COLUMBIA.

BA'K'E'RS OVEN.

SEECIFICATION forming part of Letters Patent No. 723,664, dated March 24, 1903.

Application filed August 27,1902. Serial No. 121,258. (No model.)

To all whom it may concern:

Be it known thatI, JOHN M. FISCHER, acitizen of the United States, and a resident of Washington, in the District of Columbia,have invented certain new and useful Improvements in Bakers Ovens, of which the following is a specification.

My invention relates to animproveme rit in bakers ovens, and more particularly to that class shown in my former patent, No. 610,648, dated September 13, 1898. w r

The object of my invention is toprovide means for heating the sides of the bakingspace in addition to means for heating the top, as provided in my former patent.

A further object is to provide means where-' by either or both ofsai'd heating meansmay;

4 is a horizontal section on the line t 4 of Fig. 7

2. Fig. 5 is a horizontal section on the line 5 5 of Fig. 2,,and Fig. dis a horizontal section on the line 66 of Fig. 2.

Referring more particularly to'the drawings, 1 indicates the walls-of the oven, which inclose the baking-space 2 and the combined combustion and baking space 3. In one c'or-' her of the combined combustion and baking space 3 is mounted a grate at, having disposed.

beneath it an ash-pit 5. Extending upwardly from the lower part of the combined combustion and baking space 3 to a heat-chamber 7; located above .the baking-space 2, is a flue 6. The products pass from the heat-chamber 7 through a vertical flue 8, extending upwardly a short distance from a front corner of said heat-chamber through a longitudinal flue!) on one side of the oven to the rear of the oven, thence through a transverse fine 10 in the rear of the oven to the other side of the-oven through a longitudinal flue 11, pass to and through a short transverse flue 12 in the front ofithe oven to a longitudinal flue 13 in the center, thence up to and througha short vertical flue 14.- to a longitudinal flue 15 in the center of the oven, thence through a short transverse flue 16 in the front of the oven to a longitudinal flue 17,on one side of the oven,

1 pass to and through a transverse flue 18 in the rear to a longitudinal flue 19 on the other side, thence through a short transverse flue 20 to a central longitudinal flue 21, and finallythrongh the flue 22 to the atmosphere.

The construction of oven so far described is shown in my former patent heretofore mentioned, and it is to be understood:that while 7 I have shown and described this construction as my preferred manner of heating the top of the oven I do not wish to be limited to said construction, but may use any other which will accomplish the same result.

"Intheflue 6 I provide a damper 23 to exclude heat from the chamber 7, and consequently from the top of the baking-space 2. To heat the baking-space 2 at its sides, two

passages for the prod uctsof combustion are provided, one foreachside.

extend by means of two vertical flues 24: from These passages the rear of the upper wall of the combined combustion and baking space 3. Each flue 2 1 communicates with a transverse flue 25,

extending outwardly to a longitudinal flue 26, mounted in the adjacent sidewall of the oven. Each longitudinal flue 26 communicates with another longitudinal flue 27, mounted in the wall of the. oven adjacent to the sideof the baking 'space 2, by means of a vertical flue 28in the front wall ofthe oven, and both longitudinal fines 27 communicate with a vertical flue 29 in the rear Wall of the oven by means oftransv erse flues 30. The vertical flue 29 communicates with the trans-- verse fluelO ot'the other system of dues (previously described hereinand in my former patent) by means ofashort flue 31. Disposed in theshort flue 31-isa damper' 32, by which the sidewall-heating system of the baking-space is controlled. This damper is operatedby a rod 33, extending through the central longitudinal flue 13 of the other-systemto the front of the oven. When it is desired to control both passages simultaneously,the damper 34, mounted in the flue 22, is operated.

By the construction herein described it will be seen that perfect control may be had over the heat in the oventhat is, should the baking take place too fast in one place, top or side, by a manipulation of the dampers heat may be out OK from that place and the material evenly baked.

I desire it to be understood that I do not wish to be limited to the construction and arrangement of parts herein shown and described and that I may make various changes in proportion, form, and minor details Without departing from the spirit of my invention.

What I claim as new, and desire to secure by Letters Patent, is

1. In a bakers oven, the combination with the baking-space, and the combustion-space, of two vertical fines extending from the rear of the combustion-space, two longitudinal fines connected with the vertical fines, ex-

tending forwardly, one in each side wall of the oven, two longitudinal fines extending rearwardly, one on each side of the bakingspace, two vertical fines connecting the ends of both pairs of longitudinal fines, a vertical fine at the rear of the oven, and two transverse fines connecting the rearwardly-extending longitudinal fines with said last-mentioned vertical fine.

2. The combination with the combustionspace, a baking-space,a heat-chamber above the baking-space, a flue connecting the combustion-space With the heat-chamber, and a system of fines, above the heating-chamber, of a system of fines extending from the combustion-space along the sides of the bakingspace, and fines leading from the side fines to the system of fines above the heat-chamber, independently of the baking-space.

, 3. The combination with the combined combustion and baking space, the bakingspace above the same,the heat-chamber above JOHN M. FISCHER.

In presence ot' lIERvnY S. KNIGHT, H. G. DIETERICH. 

